Hanbell ExP Series, Technical Manual, Page: 4 / 46

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management system, and each product can reach the same standard as an EU model tested sample. According to
different conditions of conformity assessment the appendix of ATEX 2014/34/EU also regulates corresponding QA
requirements. The confirmation of requirement of the above mentioned QA system is supervised by EU designated
authorities, and the so called QA system is not only the field covered by ISO 9001.
Explosion Proof
Regulatory standard Directive 2014/34/EU Directive 1999/92/EC
Applicable standard Equipments Working Place
Attribution of
responsibility
Manufacturer User
Range of
responsibility
Model certification, Quality
assurance
Risk assessment, Grading of dangerous zone, Correctly use of
explosion proof equipments
+ =
Manufactures
Directive(2014/34/EU)
End Users'
Directive(1999/92/EC)
Explosion Protection
1.2 Zone Classification
1.3 Gas Group
Zone or
division
Definition
Zone0(Gas) Explosive environment which exist continuously, usually and with a long period of time and which is
formed by a mixture of air with flammable material such as gas, vapor or droplets.
Zone1(Gas) Explosive environment which sometimes exist under a normal operation and which is formed by a
mixture of air with flammable material such as gas, vapor or droplets.
Zone2(Gas) Explosive environment which is impossible to exist under a normal operation or for only a short time
even if it exists and which is formed by a mixture of air with flammable material such as gas, vapor
or droplets.
Zone20(Dust) Explosive environment which exist continuously, usually and with a long period of time and which is
formed by flammable dust cloud in the air.
Zone21(Dust) Explosive environment which sometimes exist under a normal operation and which is formed by
flammable dust cloud in the air.
Zone22(Dust) Explosive environment which is impossible to exist under a normal operation or for only a short time
even if it exists and which is formed by flammable dust cloud in the air.